Grommet / Eyelets

I call them grommets, the package says eyelets, but I am challenged to say the least in applying them to fabric.  The first couple I tried did not stay together, this is the third attempt and I can't get the tool out of the grommet.  Is it me or does anyone else have this problem?  I will be off later to buy more and check out alternatives. I am trying to design something and definitely need a grommet.  Just one is all I want and it doesn't look like it's going to be easy.

I bought a snap press as snaps never worked for me either.